#!/bin/bash
set -e

# felt: a command-line utility for building and testing Flutter web engine.
#       It stands for Flutter Engine Local Tester.

FELT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

if [ -z "`which gclient`" ]
then
  echo "ERROR: gclient is not in your PATH"
  echo "Fix: add the path to your installation of depot_tools to your PATH"
  exit 1
fi
GCLIENT_PATH=`which gclient`

if [ -z "`which ninja`" ]
then
  echo "ERROR: ninja is not in your PATH"
  echo "Fix: add the path to your installation of depot_tools to your PATH"
  exit 1
fi
NINJA_PATH=`which ninja`

ENGINE_SRC_DIR="$(dirname $(dirname $(dirname $(dirname ${FELT_DIR}))))"
FLUTTER_DIR="${ENGINE_SRC_DIR}/flutter"
WEB_UI_DIR="${FLUTTER_DIR}/lib/web_ui"
DEV_DIR="${WEB_UI_DIR}/dev"
OUT_DIR="${ENGINE_SRC_DIR}/out"
HOST_DEBUG_UNOPT_DIR="${ENGINE_SRC_DIR}/out/host_debug_unopt"
DART_SDK_DIR="${ENGINE_SRC_DIR}/out/host_debug_unopt/dart-sdk"
GN="${FLUTTER_DIR}/tools/gn"

if [ ! -d "${OUT_DIR}" ] || [ ! -d "${HOST_DEBUG_UNOPT_DIR}" ]
then
  echo "Compiling the Dart SDK."
  gclient sync
  $GN --unoptimized --full-dart-sdk
  ninja -C $HOST_DEBUG_UNOPT_DIR
fi

echo "Running \`pub get\` in 'engine/src/flutter/lib/web_ui'"
(cd "$WEB_UI_DIR"; $DART_SDK_DIR/bin/pub get)

echo "Running \`pub get\` in 'engine/src/flutter/web_sdk/web_engine_tester'"
(cd "$FLUTTER_DIR/web_sdk/web_engine_tester"; $DART_SDK_DIR/bin/pub get)

$DART_SDK_DIR/bin/dart "$DEV_DIR/felt.dart" $@